| DOI: | 10.1002/2017JA024993
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| Scopus记录号: | 2-s2.0-85047521501
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| 论文题名: | Detailed Regression Model of Plasma Sheet By |
| 作者: | Petrukovich A.A.; Lukin A.S.
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| 刊名: | Journal of Geophysical Research: Space Physics
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| ISSN: | 21699380
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| 出版年: | 2018
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| 卷: | 123, 期:4 | | 起始页码: | 2872
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| 结束页码: | 2883
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| 语种: | 英语
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| 英文关键词: | IMF penetration
; plasma sheet
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| 英文摘要: | In a statistical model plasma sheet By primarily depends on interplanetary magnetic field (IMF) Biy and geodipole tilt τ. With 11 years of Geotail measurements we investigate a role of several other parameters with a linear regression model. Optimal averaging window of IMF input, maximizing correlation and regression coefficients, is found to be 2.25 hr. Influence of IMF Biz and local Bz on IMF penetration (regression with regard to Biy) and the deviations from the predefined warp deformation are at the level 5–10% relative to the primary model coefficients. The IMF penetration beyond 25 RE is somewhat larger for northward IMF, while closer to the Earth it becomes somewhat larger for southward IMF. These smaller effects turned out to be rather uneven across the tail, making reliable quantification and physical interpretation not always possible. The major reasons of difficulties are uneven coverage and internal correlations in the input space (Biy–τ– Biz) due to combination of spacecraft orbit and neutral sheet dynamics, effects of coordinate transformations, etc. In particular, origins of extremely large IMF Biy penetration (order of 30–50% above the average one) for some years and tail locations remain not fully clear. A larger multispacecraft data set covering all seasons in all spatial zones is necessary to further advance in this study. ©2018. American Geophysical Union. All Rights Reserved. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/114106
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Space Research Institute, RAS, Moscow, Russian Federation; National Research University Higher School of Economics, Moscow, Russian Federation
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| Recommended Citation: | |
Petrukovich A.A.,Lukin A.S.. Detailed Regression Model of Plasma Sheet By[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)
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